Akiko on the Planet Smoo

When this fourth-grader comes home from school one day, she finds an envelope waiting for her with no stamp and no return address. The message inside reads Dear Akiko: We are coming to get you. Meet us outside your bedroom window tonight at 8:00. Don't forget your toothbrush. How could anyone meet her outside her window? She lives on the 17th floor, for goodness sake. But that evening, as Akiko is preparing to study for tomorrow's geography test, she finds a small spacecraft hovering outside her window with two odd little men inside.
They have been sent to whisk Akiko off to the Planet Smoo where she will lead a team enlisted to find the King of Smoo's kidnapped son, Prince Froptoppit. Akiko, the leader of a rescue mission? She's too timid to be on the school's safety patrol! So begins Akiko's adventure across the land of Smoo to find a prince and become a leader.